Hypodermic unit



June 8, 1954 Filed March 27, 1951 S. L. FOX

2,680,440 HYPODERMIC UNIT 2 Sheets-Sheet l i INVENTOR. P ifi g, Gian/6y z. Fox

'June 8, 1954 s. L. FOX 2,680,440 HYPODERMIC UNIT Filed March 27, 1951 2 Sheets-Sheet 2 INVENTOR. kStan/j z Z. 9' 0 2 '4 /Z, L I m Patented June 8, 1954 UNITED STATES PATENT OFFIC 2,680,440 HYPODERMIC UNIT Stanley L. Fox, Los Angeles, Calif.; Dorothy B. Fox, executrix of said Stanley L. Fox, deceased Application March 27, 1951, Serial No. 217,752

16 Claims. (01. 128-216) This invention relates to a fluid handling desealed by a case, an element of which may, if vice or hypodermic unlt and is more specifically desired, be employed as a medium by which prescal to use, and such as to be efiective in taking 10 ture will be apparent from the details that I set sired and yet separated from or maintained out of generally two principal elements, namely, an

contact wtih the needle or other like parts of the applicator and a fluid carrier, and it may further device.

It is a general object of this invention to proelements. The applicator is preferably a unit vide a device of the general character referred formed of metal or the like, and is characterized to characterized by two elements, preferably uniby a head from which a tubular needle projects which the stem of the fluid carrier is integral 30 the cell, which is adapted to seat or engage in of the fluid carrier by a coupling subject to being 40 vide against passage or leakage of fluid until such cause the cell to be flexed or collapsed in a manner to force the contents therefrom. The strucemployed so that the case section to in turn collapse the cell within it whereupon release of the case section will allow it to return to its original shape and reduce prescell so that material is, in eilect, the cell. The case further includes a front or forward section which completely en closes or houses the forwardly projecting needle portion of the applicator, and this section of the case preferably receives the forward end of the rear section to which it can be tightly fitted or possibly sealed, if desired. When a front or forward cap section is employed the forward projecting end of the stem of the fluid carrier can be anchored or fixed to this cap section so that when the cap section is removed the stem is put under tension and withdrawn in the desired manher.

The various objects and features of my invention will be fully understood from the following detailed description of typical preferred forms and applications of the invention, throughout which description reference is made to the accompanying drawings, in which:

Fig. 1 is a view illustrating a device of the present invention in the course of being used, the cell of the device being shown partially colthe needle engaged in 2 is a side elvation of the provided by the present invention, apart from the case and applicator, a portion of the cell being broken away to show in section. Fig. 3 is an enlarged longitudinal detailed sectional view of a form of applicator showing the fluid carrier in connection therewith. Fig. 4 is a view sim'lar to Fig. 1, illustrating a somewhat difierent form of construction where the applicator has an extension affording support for the collapsible portion of the fluid carrier. Fig. 5 is a view of the fluid carrier shown in Fig. 4, showing it separated from the applicator. Fig. 6 is a longitudinal detailed sectional view of a portion of the structure shown in Fig. 4, and showing the structure before being prepared for use. Fig. '1 is a transverse sectional view taken as indicated by line L-l on Fig. 6. Fig. 8 is an enlarged detailed sectional view taken as indicated by line 8-.- -8 on Fig. 5. Fig. 9 is an enlarged detailed sectional view taken as indicated by line 9-43 on F Fig. 10 is a side elevation of an embodiment of the invention such as is shown in Fig. 1, wherein the structure is carried in a case, the case being shown in elevation. Fig. ll is an e larged detailed sectional view of a portion of the structure shown in Fig. 10. Fig. 12 is an enlarged detailed transverse sectional view taken as indicated by 13 is an enlarged detailed view of a portion of the structure shown Fig. 1a is a view similar to Fig. 10 device illustrated in Fig. 4 carried Fig. 15 is an enlarged detailed sectional view of a portion of the structure shown in Fig. 14. Fig. 16 is an enlarged detailed transverse sectional indicated by line l6--l6 on Fig. Fig. 17 is an enlarged detailed view of a portion of the structure shown in Fig. 15.

Referring first to the form of the invention shown in Figs. 1 to 3, inclusive, the structure includes, generally, two principal elements or units, one an applicator A and the other a fluid carrier B. The applicator A in fluid carrier showing it ner. Fig.

a typical manthis case is such that it can be advantageously formed of metal and it is characterized by a head it and a needle H carried by and projecting forward from the head. In the particular case illustrated the needle is an elongate tubular element and it projects forwardly from a socket portion 12 that projects forward from the main portion E3 of the head. In this particular case the main portion 13 of the head it is round and substantially discshaped in form, and an opening it enters it from its rear side to receive the forward end portion of the collapsible cell of element B. The socket portion 32 projects a suitable distance forward from the portion 13 and has a socket opening it somewhat forwardly convergent in form. The socket portion i2 is preferably integral with the main portion 13 and the needle ii is preferably integral with the socket portion l2. The needle is of the desired form and length and at its forward end it is dressed or beveled away so that it presents a sharp end or point ll.

The element or unit B has a collapsible cell portion 2%, and a stem 2i is connected with and projects forward from the cell 28. In the case illustrated a neck 22 is joined to and projects forward from the front end 23 of the cell 20 and the stem 2% is joined to and projects forward from the neck. The cell portion 29 is characterized by a tubular body 26 closed at its rear end as by being pinched together and sealed at 25, and the front end of the wall '23 at the forward end of the cell 28 closes the body 25 and this portion of the cell is adapted to seat or fit into the opening it; provided in the head id. The neck 22 is preferably an integral extension or projection on the end 23 and seats in the opening it in the socket i2, and the stern 2| continues from the neck through the needle H to have a terminal end portion 25 projecting forward from or beyond the pointed end ll of the needle. In the particular case illustrated an opening 39 formed longitudinally through the neck 22 is in communication with the body 25 of the collapsible cell and the stem 28 is hollow or tubular, except at the forward end portion 2a where it is closed or sealed so that no fluid can escape therefrom.

With the construction just described the material to be handled can be filled into the collapsible cell 2 whereupon the cell can be sealed or closed at if: in any suitable manner. It is desirable, generally, to form the unit B, just described, of a socalled plastic, such as polyethylene or polyvinyl as such materials are recognized as having physical characteristics or properties lending themselves for use in a device of the character under consideration. In such case the seal at 28 can be eifected by the application of heat and pressure, and the wall of body 25 can be made of such thickness as to have the desired yet be subject to deformation or fiexure necessary for exertion of the desired pressure on the material in the cell.

It it is desired that more than one material be handled or carried by the cell and that the materials be kept seperate, one or more fracturable envelopes lii can be located within the cell 20 in the manner illustrated in Fig. 2 of the drawings. In this case the envelope fill carrying a second material may be formed of a thin-walled sheet that will fracture under suitable pressure. Any such envelope of material may be loose or anchored or secured in a predetermined position in the cell by having a portion held at 28 where the rear end portion ofthe cell body 25 is sealed. It is to be under-.

free or, as shown, it may be structure shown in Figs.

stood, of course, that such secondary container or envelope 40 need not be incorporated in the construction unless circumstances so require.

With the construction just described the carrier or unit B merges with the opening it in the socket portion E2 of the applicator and the unit B is shaped and proportioned at the forward end of the collapsi'ole cell 251* l5 and it, drawings.

and tapered or a rearward 6X- 1 to 3, and it will be apparent that the action of the structure is substantially the same as that above described, except that the extension as of the head It afiords the longitudinal axis of the form of the invention shown in Figs. 1 to 3 The head ll! of e It will be understood how the pressure applied to case section 65, causing it to collapse will, in turn, cause collapse of the collapsible materialcarrying cell within the case section. Through this construction the collapsible cell 20 of gaged and operated, as in the cases illustrated in Figs. 1 and 4 of the drawings.

The front section or disengaged by moving it the needle, the stem Zi is pulled out and broken away, leaving the needle open and the structure ready for immediate operation. The b--eak joint the case being formed of a rear section 65 and a front section 66*. The case sections 65 and 66 may be essentially the same as those shown in Figs. 10 to 13, inclusive, except that they are preferably varied in cross-sectional configuration to suitably accommodate the particular or peculiar shape of the structure shown in Figs. 4 to 9, inclusive.

It will be apparent that when either of the structures above described is to be used to receive a sample or body of fluid, the cell is collapsed, either directly or by operation of the case section engaged over it, and the needle is inserted. As the cell is freed or is expanded the fluid will fill into the cell.

Having described only typical preferred forms and applications of my invention, I do not wish to be limited or restricted to the specific details herein set forth, but wish to reserve to myself any variations or modifications to those skilled in the art and fall within the scope of the following claims.

Having descr'bed my invention, 1 claim:

1. A device of the character described including, two elements, one an applicator having a head and a tubular needle carried by and projecting from the head, and the other a continuous integral unit including a fluid carrier supported by the combined needle and head and having a sealed collapsible cell portion carrying a supply of fluid and a stem projecting from the cell and slidably engaged through the needle, the stem being held by a break joint and adapted to be removed by withdrawal from the forward end of the needle.

2. A device of the character described including, two elements, one an applicator having a head and a tubular needle carried by and projecting from the head, and the other a continuous integral unit including a fluid carrier supported by the combined needle and head and having a sealed collapsible cell portion carrying a supply of fluid and a tubular stem projecting from the cell and slidably engaged through the needle to project from the forward end thereof, the projecting portion of the stem being closed and being severable so the forward end of the needle is unobstructed and delivers fluid passed by the stem.

3. A device of the character described including, two elements, one an applicator having a head and a tubular needle carried by and projecting from the head, and the other a continuous integral unit including a fluid carrier supported by the combined needle and head and having a sealed collapsible cell portion carrying a supply of fluid and a stem projecting from the cell and slidably engaged through the needle, the stem being connected to the cell by a part forming a break and being adapted to be removed from the needle and to open the cell by Withdrawal from the forward end of the needle following breaking of said part.

4. A device of the character described including, two elements, one an applicator having a head and a tubular needle carried by and projecting from the head, and the other a continuous integral unit forming a fluid carrier engaging the head and having a sealed collapsible cell portion carrying a supply of fluid and a stem fixed to and projecting from the cell and slidably engaged through the needle, the head having a portion supporting the carrier.

5. A device of the character described including, two elements, one an applicator having a head and a tubular needle carried by and projecting from the head, and the other a continuous integral unit forming a fluid carrier having a sealed collapsible cell portion carrying a supply (ill of fluid and engaged with the head and a stem anchored to and projecting from the cell and slidably engaged through the needle, the head having a rearwardly facing opening receiving and supporting the forward end portion of the cell.

6. A device of the character described including, two elements, one an applicator having a head and a tubular needle carried by and projecting from the head, and the other a continuous integral unit forming a fluid carrier having a sealed collapsible cell portion carrying a supply of fluid and engaged with the head and a stem anchored to the cell and projecting from the cell and slidably engaged through the needle, the head having a rearwardly projecting extension supporting the cell.

7. In combination, an applicator including, a head, a tubular needle rigid with and projecting forward from the head, a collapsible fluid carrying cell, a stern projecting forward from the cell and through the needle and severable to free the needle for passage of fluid from the stern, and a case including a section engaged with the head and encasing the cell.

8. In combination, an applicator including, a head, a tubular needle rigid with and projecting forward from the head, a collapsible fluid carrying cell, a stern projecting forward from the cell and through the needle and severable to free the needle for passage of fluid from the stem, and a case including a section engaged with the head and encasing the cell, said case section being deformable to connnunicate collapsing pressure to the cell.

9. In combination, an applicator including, a head, a tubular needle rigid with and projecting forward from the head, a, collapsible fluid carrying cell, a stem projecting forward from the cell and through the needle and severable to free the needle for passage of fluid from the stern, and a case including a section tightly engaged with the head and completely enclosing the cell.

10. In combination, an applicator including, a head, a tubular needle rigid with and projecting forward from the head, a collapsible fluid carrying cell, a stern projecting forward from the cell and through the needle and severable to free the needle for passage or" fluid from the stern, and a case including a rear section engaged with the head and encasing the cell, and a front section engaged over and encasing the needle.

11. in combination, an applicator including, a head, a tubular needle rigid with and projecting forward from the head, a collapsible fluid carrying cell, a stem projecting forward from the cell and through the needle and severable to free the needle for passage of fluid from the stern, and a case including a rear section engaged with the head and encasing the cell, and a front section engaged over and encasing the needle, the rear end portion of the front section being engaged with the forward end portion of the rear section.

12. A device of the character described including, two elements, one a substantially rigid applicator having a tubular needle portion and the other a continuous integral unit forming a fluid carrier having a flexible portion defining a sealed collapsible cell carrying a supply of fluid, the carrier having a stern projecting from "1e cell and slidably engaged through the needle portion, the cell having a material carrying envelope therein, the envelope being of friable material and adapt ed to be fractured by manual force communicated thereto through the cell.

13. A device of the character described includ- 2,680,440 ing, two elements, one a substantially rigid applicator having a head and a tubular needle carried cator having a tubular needle portion, and the by and projecting from the head, and the other other a continuous integral unit including a fluid a continuous integral unit forming a fluid carably engaged th ough the needle portion of the ment including a stem pro ectlng from the cell applicator. defining portions and slidably engaged through 14. A device of the character described includthe needle, the cell having a material carrying ing, two elements, one an applicator having a 10 envelope anchored in the rear end portion therehead and a tubular needle carried by and proof, the envelope being of friable material and ecting from the head, and the other a continuadapted to be fractured by manual force comous integral unit including a fluid carrier supmunicated thereto through the cell.

References Cited in the file of this patent and a stem projecting from the cell and slidably UNITED STATES PATENTS engaged through the needle, the stem beingtubular and having a closed portion severable to facili gg g'gi Apr 3 z gi the needle by apphca'uon 1,522,198 Marcy Jan. 6, 1925 15. A device of the character described includg i i n ing, two elements, one an applicator having a 1815300 Harris 1931 head and a tubular needle carried by and pro- 2134144 Pincock Oct 1938 Jecting forward from the head, and the other a 25 2371086 Watson 1945 continuous integral unit forming a fluid carrier 2512568 Saffir 1950 having a sealed elongate collapsible cell portion FOREIGN PATENTS and slidably engaged through the needle, the 30 Number counilry. Date head having an extension defining a cell receiv- 7 16545 Great i i 1915 ing opening, the center of which is spaced from 109040 Grea? Britain 1917 the longitudinal axis of the needle. 121,673 Austaha July 1946 16. A device of the character described includ- 427324 Germany 1926 ing, two elements, one a substantially rigid appli- 35 587280 Great Britain 1947 

